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PanicException when, double equal optimization

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

pythonRelated to Python PolarsRelated to Python Polars

Status: Open.

#23590 In pola-rs/polars;

· niekrongen opened on Jul 15, 2025

to_torch attempts to cast unused columns

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

pythonRelated to Python PolarsRelated to Python Polars

Status: Open.

#23579 In pola-rs/polars;

· Tryner opened on Jul 14, 2025

pl.Expr().meta.root_names() returns wrong value

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

pythonRelated to Python PolarsRelated to Python Polars

Status: Open.

#23553 In pola-rs/polars;

· mstone99 opened on Jul 13, 2025

1 comment

Memory leak when reading CSV files in parallel using rayon

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

rustRelated to Rust PolarsRelated to Rust Polars

Status: Open.

#23546 In pola-rs/polars;

· shuangluoxss opened on Jul 12, 2025

2 comments

Build fails: unresolved import polars_time::prelude::known_timezones, and other errors

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

rustRelated to Rust PolarsRelated to Rust Polars

Status: Open.

#23531 In pola-rs/polars;

· yurivict opened on Jul 10, 2025

3 comments

Lazyframe sink_parquet after join_asof column order matters

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

pythonRelated to Python PolarsRelated to Python Polars

Status: Open.

#23519 In pola-rs/polars;

· vincenzon opened on Jul 10, 2025

1 comment

Series.__array_ufunc__ can't handle UInt output unless _all_ input have type UInt?

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

pythonRelated to Python PolarsRelated to Python Polars

Status: Open.

#23513 In pola-rs/polars;

· jongbinjung opened on Jul 10, 2025

1

2 comments

Writing columns containing large binary blobs will result in huge, untruncated statistics headers & compression is ~100,000x worse than pyarrow

A-io-parquetArea: reading/writing Parquet filesArea: reading/writing Parquet files

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

pythonRelated to Python PolarsRelated to Python Polars

Status: Open.

#23498 In pola-rs/polars;

· jonded94 opened on Jul 9, 2025

2 comments

Fix expand_selector slowdown on tall dataframes

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

pythonRelated to Python PolarsRelated to Python Polars

Status: Open.

#23478 In pola-rs/polars;

· fingoldo opened on Jul 8, 2025

1 comment

Out-of-range integers give wrong results in index_of() in some cases

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

pythonRelated to Python PolarsRelated to Python Polars

Status: Open.

#23476 In pola-rs/polars;

· itamarst opened on Jul 8, 2025

__exit__ fails in tempfile when reading with pl.read_csv

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

pythonRelated to Python PolarsRelated to Python Polars

Status: Open.

#23460 In pola-rs/polars;

· hutch3232 opened on Jul 7, 2025

polars.DataFrame.write_json panics for pl.List(pl.Enum) nested column

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

pythonRelated to Python PolarsRelated to Python Polars

Status: Open.

#23459 In pola-rs/polars;

· miccoli opened on Jul 7, 2025

1 comment

application_name parameter not being sent to database

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

pythonRelated to Python PolarsRelated to Python Polars

Status: Open.

#23402 In pola-rs/polars;

· kurt-rhee opened on Jul 2, 2025

Panic raised by pl.Expr.qcut() when too many NaNs are present

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

pythonRelated to Python PolarsRelated to Python Polars

Status: Open.

#23385 In pola-rs/polars;

· jameskrach opened on Jul 2, 2025

List[str] seams to do some strange things in the background if initialized with only [] values.

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

pythonRelated to Python PolarsRelated to Python Polars

Status: Open.

#23379 In pola-rs/polars;

· Benno49 opened on Jul 1, 2025

pl.lit(series) does not create a literal value

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

pythonRelated to Python PolarsRelated to Python Polars

Status: Open.

#23337 In pola-rs/polars;

· mcrumiller opened on Jun 27, 2025

2 comments

follwing sql reports Error: relation '/par/tpchgen-rs/sf3-parquet/customer.parquet' was not found in polars-cli

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

rustRelated to Rust PolarsRelated to Rust Polars

Status: Open.

#23332 In pola-rs/polars;

· l1t1 opened on Jun 27, 2025

Data handled incorrectly when schema is oversized

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

pythonRelated to Python PolarsRelated to Python Polars

Status: Open.

#23302 In pola-rs/polars;

· vsilviaMO opened on Jun 24, 2025

Set engine affinity takes precedence over collect argument, and raises panic exception with pl.scan_pyarrow_dataset.

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

pythonRelated to Python PolarsRelated to Python Polars

Status: Open.

#23254 In pola-rs/polars;

· BrendanRobinson1 opened on Jun 20, 2025

1 comment

write_delta/read_delta does not recreate strings in paths with reserved or non-ascii characters

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

pythonRelated to Python PolarsRelated to Python Polars

Status: Open.

#23241 In pola-rs/polars;

· kdn36 opened on Jun 19, 2025

1

1 comment

Polars StringCache and IO Source Panic

bugSomething isn't workingSomething isn't working

needs reproBug does not yet have a reproducible exampleBug does not yet have a reproducible example

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

pythonRelated to Python PolarsRelated to Python Polars

Status: Open.

#23224 In pola-rs/polars;

· mstone99 opened on Jun 17, 2025

1 comment

When using write_parquet with partition_by and a cloud URL polars creates local directories

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

rustRelated to Rust PolarsRelated to Rust Polars

Status: Open.

#23221 In pola-rs/polars;

· wairforretailbas opened on Jun 17, 2025

3 comments

Sliced struct column with nulls produces invalid arrow conversion

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

pythonRelated to Python PolarsRelated to Python Polars

Status: Open.

#23214 In pola-rs/polars;

· wence- opened on Jun 17, 2025

Memory usage regression in parquet reading after 1.27.1

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

pythonRelated to Python PolarsRelated to Python Polars

Status: Open.

#23213 In pola-rs/polars;

· lmocsi opened on Jun 17, 2025

4 comments

polars.read_parquet_schema fails when file metadata contains embedded Parquet

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

pythonRelated to Python PolarsRelated to Python Polars

Status: Open.

#23211 In pola-rs/polars;

· seriouscorey opened on Jun 16, 2025